Loosening roll for carding machines



Sept. 7 1926. 1,598,800

. I 0. w. BREDBURY noosanwe ROLL FOR'CARDING MACHINES I Filed Nv. 1 ,1922 2 Shets-Sheet 1' V ATTORNEY.

' o. w. BREDBURY LOOSENING ROLL FOR CARDING MACHINES File Ov- 11, 1922 2 Sheets-Sheet 2 42' M n mm 1,58,8hti

tlhll'f'ED STATES? Pr i'lhhl'l" @FFEQE.

OWEN vV. BREDBURY, OF READING, MASSACHUSETTS.

LOOSENING ROLL FOR CARDING- MACHINES.

Application filed Novemher 11, 1922.

is substantially a large wire brush with long wire teeth, which travels at a faster surface speed than the main cylinder and brushes up the stock so that it can be re moved by a doifer. The teeth of the fancy are set close to those on the main cylinder but do not enter in between them.

The teeth onsuch cards fill up with stock and waste material of various kinds and it is necessary from time to time to stop the card and by hand to cleanout the teeth of r the workers and of the main cylinder.

The purpose of my invention is toagitate the stock and dirt below the points of the teeth of the main cylinder or the doffer so that it will be loose and so that it will not be necessary to clean or strip the rolls as frequently.

I am aware that the attempt has been made to use roll having; more or less pins projecting from the surface, such pin-s being rigid, and that the attempt has been made to locate such roll in various posit-ions, and I do not claim broadly such a construction.

What I do claim, however, is that I am the first to successfully devise such a roll with yielding needles which project sub stantially in a radial direction and are so set that they penetrate between the teeth on the main cylinder or the dofl'er.

Preferably, I use needles with points which taper gradually from their bases to their tips, instead of the shovel-pointed teeth o1"chi.sel-p'ointed teeth generally. used on such cards. I also prefer to give my loosening roll an axial traverse motion and a faster surface surface speed than the cylinder to be cleaned, both of which help to loosen the material below the points of the teeth and allow it to be carried. along by the next roll or to drop out- I prefer to use spring needles set in an Serial No. 600,425.

elastic foundation but may use rigid needles set in. an elastic foundation or spring needles set in a. rigid foundation.

When properly made and adjusted, I do away entirely wit-h the necessity of stopping the card to strip it, and my spring needles themselves do not break and do not bend nor wear out the teeth of the main cylinder or other roll. I

I prefer to have relatively few pins and widely separated so that they will not clog up and it will not necessary to clean them.

In the drawings, Fig. l is a diagrammatic side elevation of a card with my preferred form of device in one position thereon.

2 is a similar diagrammatic side elevation showing my device applied in another position.

Fig. 3- is a detail side elevation showing two rows of my needles and how they enter between the teeth of the main cylinder.-

Fig. 4 is an elevation of my roll with its traverse motion, some parts being broken away.

Fig. 5 is a sectional elevation showing one method of attaching my needles toa roll.

Fig; 6 is section of Fig. on line 66.

Fig. 7 is a perspective section similar to Fig. 6 showing a slight modification of the method ofv attaching my needles.

Fig. 8 is a diagrammatic elevation showing one manner of arranging my line of needles.

Fig. 9 is a vertical. sectional elevation of a roll with four single rows of needles.

Fig. 10 is a detail [showing a modified type of needle and manner of attaching to the roll.

Fig. 11 is a diagrammatic detail showing another location for my device.

Fig. 12 is a. diagrammatic side elevation showing my device applied to a dofifer.

V Fig. 13 is a detail sectional view showing a modified type of pin and method of attaching it to the roll.

In the drawings, A represents the main cylinder of a woolen card carried by a shaft such as 10 and being covered with card clothing having teeth 11 which pitch forward, that is, from left to right in the direction of the movement of the main cylinder which at the top is from left to right. I will call this, teeth which pitch forward and will say that the main cylinder, and other roll traveling in the same direction, travels forward, while those which travel in the opposite direction, I will say, travel backward.

The stock is fed to the main cylinder in any usual manner as by feed rolls 12 and 13 running in the direction of the arrows.

Around the top part of the main cylinder A, I locate a number of workers shown in Fig. 1 as four, indicated at 20, 20, 20, 20. each of such workers being shown as traveling backward and having teeth which pitch forward. Associated with each worker 20 is a stripper 21 which travels backward and which has teeth which pitch backward.

50 represents a fancy roll of the us a1 type having long straight wire teeth, and 60 represents the doffer, also of the usual type.

In Fig. 2, the workers 120, 120, 120, 120, are shown as traveling forward and as having teeth which pitch forward.

The main feature of my invention con sists of the loosening roll B whichis shown in Fig. 1 as located in placeof or before the first worker, and in Fig. 2 as located be-' tween the last worker and the fancy 50. In both cases it is carried by a shaft 45supported in suitable bearings I, K, and is capable of sliding in such bearings axially when moved by a traverse motion to be described.

The drive of this roller is shown asa pulley 14 carried by shaft 10 connected by a belt 15 with a smaller pulley 44 carried by shaft 45, the relation of the parts being such that, preferably, the surface speed of roll B is 25% greater than thatof the main cylinder and in the same direction.

This roller B is shown as having one or more rows of pointed needles such as 42. These needles, preferably, taper from base to point and may be so arranged that there will be two connected by a bar at their bases in the form of a staple, as shown in Fig. 6. As shown in 6, I prefer to form each roll with heads such as 47 upon which is built the curved surface 48 which may be of wood or other similar material.

Each row of pins is, preferably, held in position by being passed through a strip of brass 147 which is imbedded in a rubber base 146, which rubber base is imbedded in a groove or slot 145 in the surface 48. This construction allows the pins to give slightly in a radial direction. As shown in Fig. 4,

the rows of pins, such as 244, 245 and 246,

may be in staggered relation or, as shown in Fig. 8, a single row of pins, such as 87, may wind around a. cylinder, such as 80, in a spiral'form or, as shown in Fig. 9, there may be single rows of pins 91, 92, 93 and 94 running parallel to each other and to the cylinder 90, such rows being ninety degrees apart.

As shown in Fig. 7, instead of a brass strip imbedded in rubber, I may use a fillet of the ordinary card clothing foundation 85 one-half inch to one inch in width, between which staples, having legs 81, 82 with a connecting bar 84, are passed. This fillet may be glued in place.

In any case my rows of flexible pins should be widely separated by bare spaces.

I prefer to give my roll a traverse motion by means ch as shown in 4 including a case 60 having a bearing hole 59 for shaft 45 of roll B. Fixed to shaft 45 on each side of case 60 collars 161 which revolve with shaft 45 and cause case 60 with gear 63 to move axially with shaft iVorm 61 is fixed to shaft 45 and engages a gear 63 revoluble in case 60 to which, at 64, is pivoted a rocking arm 65. This arm at 66 is pivoted to an arm 67 which is connected to another arm 68 by a bar 69 and set screws 70. Through these arms 67 and 68 are the holes 71 and? 2 for shaft 45 and they extend on each side of the lined bearing memberI.

Asthe shaft 45 is caused to revolve as by pulley 44, the action of the worm 61 on gear 63 is such that shaft 45 and roll B are caused to traverse back and forth axially. I My needles and their foundation are, preferably, both resilient or elastic, but one or the other must be yielding. I may ce- 'ment or glue my brass strip to the rubber backing and the backing to the roll, but I prefer also to fasten them by additional means.

In Fig. 6, I provide holes 141 in the strip 147 smaller than the head 142 but larger than the shank 140 of a fastening screw which goes through such holes, the rubber 146 and into the roll B.

In Fig. 4, I show metal cross bands 247 fastened to roll B by screws 248, 248.

In Fig. 10, I show a single shanked needle .170 with a head 171 passing through a strip 149 held in place by metal bands 247 and screws 248. Strip 149 may be of rub-- her or other resilient material, or wood or metal if the needles are springing. If a wooden strip 180 is used, as shown in Fig. 13, I may drive tapered needles 181 through it from the back.

In Fig. 11, I show my roll B located in place of one of the intermediate workers instead of in place of the last worker, and as being provided with a removable cover H which directs any fiyings back to the main cylinder.

In Fig. 12, I show my roll B applied to the top of dolier. In this location, asthe fleece I4 has been removed by the comb M, leaving only dirt 25 at the top, my roll B kicks out this dirt as shown.

I prefer to use a cover H and a pan N to receive this dirt.

The needles should be tapered, of fine wire, yielding, and arranged in rows, while the roll should have a traverse motion and should also travel at a greater surface speed than the roll, the stock upon which is to be loosened and cleaned, in order to get the best results.

On a first breaker card, I prefer to locate my roll next the fancy as shown in 2 because the stock is in better condition than when it is first fed from the feed box, and any flyings will be worked in and evened in the next carding.

On the finisher, however, I prefer the location next the breast or feed rolls, as shown in Fig. 1 and Fig. 11, as the stock at this point is even, and the stock which my roll loosens will be reworked by the workers before it is finally taken from the card.

When my loosening roll is used, there is less waste of fibre as it is carried along in the fleece, but thedirt, if dry, drops off at the bottom of the main cylinder or, if it is greasy, some settles to the bottom of the card clothing teeth and must infrequently be stripped out by hand.

I claim 1. In a carding machine having a main cylinder covered with card clothing having wire teeth, workers, strippers and a doi'ler,

the combination of a loosening roll having a longitudinal groove, an elastic strip imbedded in said groove, a metal strip imbedded in the elastic strip, yielding tapering needles carried by the metal strip, and means to retain the strip flexibly in position, the loosening roll being so set that the needle points penetrate between said wire teeth, with means to give the loosening roll an axial traverse motion, and means to cause the loosening roll to revolve in the opposite direction to, and at a greater surface than, the main cylinder.

2. In a carding machine having a main cylinder covered with card clothing having wire teeth, workers, strippers and a doffer, the combination of a loosening roll having a longitudinal groove, an elastic strip imbedded in said groove, a metal strip imbedded in the elastic strip, yielding tapering needles carried by the metal strip, and means to retain the strip flexibly in position, the loosening roll being so set that the needle points penetrate between said wire teeth,- with means to give the loosening roll an axial traverse motion.

OlVEN lV. BREDBURY. 

